gbrumfiel writes: "The Large Hadron Collider is just getting ready for its next big science run. One thing researchers hope it will find is evidence for supersymmetry, a theory that could help to unify fundamental forces and explain mysterious dark matter. But as Nature reports this week, the LHC has shown no signs of supersymmetry in datafrom lastyear's run. If super particles don't appear by 2012, then physicists might give up on the theory for good."